Below zero forecast

Commuters brave the subzero windchill and slushy congested walkways around the Wacker Avenue construction project. The Chicago area's latest weather challenge is moving in this morning with arctic chill and breezy winds expected to linger through Thursday. A wind chill advisory is in effect from 9 p.m. today until noon Wednesday, with wind chill values today reaching as low 5 below to 15 below early this morning and 20 below to 25 below tonight. Wind chills at the latter level will cause frostbite to exposed skin within 30 minutes. Today's high temperature will be 10 to 14 above.

Commuters brave the subzero windchill and slushy congested walkways around the Wacker Avenue construction project. The Chicago area's latest weather challenge is moving in this morning with arctic chill and breezy winds expected to linger through Thursday. A wind chill advisory is in effect from 9 p.m. today until noon Wednesday, with wind chill values today reaching as low 5 below to 15 below early this morning and 20 below to 25 below tonight. Wind chills at the latter level will cause frostbite to exposed skin within 30 minutes. Today's high temperature will be 10 to 14 above. (E. Jason Wambsgans, Chicago Tribune)

Commuters brave the subzero windchill and slushy congested walkways around the Wacker Avenue construction project. The Chicago area's latest weather challenge is moving in this morning with arctic chill and breezy winds expected to linger through Thursday. A wind chill advisory is in effect from 9 p.m. today until noon Wednesday, with wind chill values today reaching as low 5 below to 15 below early this morning and 20 below to 25 below tonight. Wind chills at the latter level will cause frostbite to exposed skin within 30 minutes. Today's high temperature will be 10 to 14 above.E. Jason Wambsgans, Chicago Tribune